﻿#region COPYRIGHT
//--------------------------------------------------------------------------------
// <copyright file="InitializerCollection.cs" company="starLiGHT Entertainment Studios">
//    Copyright (c) 2008, 2009, 2010, 2011
//       Roland Rosenkranz (Glatzemann@email.de)
// </copyright>
// <license>
//   This file is part of starLiGHT.Particles.
//
//   starLiGHT.Particles is free software: you can redistribute it and/or modify
//   it under the terms of the GNU Lesser General Public License as published by
//   the Free Software Foundation, either version 3 of the License, or
//   (at your option) any later version.
//
//   starLiGHT.Particles is distributed in the hope that it will be useful,
//   but WITHOUT ANY WARRANTY; without even the implied warranty of
//   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//   GNU Lesser General Public License for more details.
//
//   You should have received a copy of the GNU Lesser General Public License
//   along with starLiGHT.Particles. If not, see http://www.gnu.org/licenses/.
//    
//   ADDITIONAL (commercial) LICENSES for starLiGHT.Particles are available on request.
// </license>
// <original_license>
//  * FLINT PARTICLE SYSTEM
//  * .....................
//  * 
//  * Author: Richard Lord
//  * Copyright (c) Richard Lord 2008-2009
//  * http://flintparticles.org
//  * 
//  * 
//  * Licence Agreement
//  * 
//  * Permission is hereby granted, free of charge, to any person obtaining a copy
//  * of this software and associated documentation files (the "Software"), to deal
//  * in the Software without restriction, including without limitation the rights
//  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//  * copies of the Software, and to permit persons to whom the Software is
//  * furnished to do so, subject to the following conditions:
//  * 
//  * The above copyright notice and this permission notice shall be included in
//  * all copies or substantial portions of the Software.
//  * 
//  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
//  * THE SOFTWARE.
// </original_license>
// <version>
// **************[ starLiGHT.Engine SVN ]**********************
// * $Rev:: 620                   $:  Revision of last commit *
// * $Author:: unknown            $:  Author of last commit   *
// * $Date:: 2010-12-07 15:23:58 #$:  Date of last commit     *
// ************************************************************
// </version>
//--------------------------------------------------------------------------------
#endregion

namespace starLiGHT.ParticleSystem.Initializer
{
    #region Using Statements
    using System;
    using System.Collections.Generic;
    using System.Text;
    using starLiGHT.ParticleSystem.Common;

    #endregion

    /// <summary>
    /// The InitializerCollection Initializer collects a number of initializers into a single, larger 
    /// initializer that applies all the grouped initializers to a particle. If you use it together 
    /// with the Random Initializer you are able to randomly choose from different groups of 
    /// initializers when initializing a particle.
    /// </summary>
    public class InitializerCollection : InitializerBase
    {
        #region Member Variables
        private List<Initializer> _initializers;
        private Emitter _emitter;

        #endregion

        #region Using Statements
        public InitializerCollection(params Initializer[] initializers)
        {
            _initializers = new List<Initializer>();

            foreach (Initializer ini in initializers)
            {
                addInitializer(ini);
            }
        }

        #endregion

        public List<Initializer> Initializers
        {
            get 
            { 
                return _initializers; 
            }

            set
            {
                if (this._emitter != null)
                {
                    foreach (Initializer initializer in _initializers)
                    {
                        initializer.removedFromEmitter(this._emitter);
                    }
                }

                this._initializers.Clear();
                this._initializers = value;
                if (this._emitter != null)
                {
                    foreach (Initializer initializer in value)
                    {
                        initializer.addedToEmitter(this._emitter);
                    }
                }
            }
        }

        public void addInitializer(Initializer initializer)
        {
            this._initializers.Add(initializer);
            if (this._emitter != null)
            {
                initializer.addedToEmitter(this._emitter);
            }
        }

        public void removeInitializer(Initializer initializer)
        {
            this._initializers.Remove(initializer);
            if (this._emitter != null)
            {
                initializer.removedFromEmitter(this._emitter);
            }
        }

        public override void addedToEmitter(Emitter emitter)
        {
            this._emitter = emitter;
            for (int i = 0; i < this._initializers.Count; ++i)
            {
                this._initializers[i].addedToEmitter(emitter);
            }
        }

        public override void removedFromEmitter(Emitter emitter)
        {
            for (int i = 0; i < this._initializers.Count; ++i)
            {
                this._initializers[i].removedFromEmitter(emitter);
            }

            this._emitter = null;
        }

        /// <summary>
        /// The initialize method is used by the emitter to apply the initialization
        /// to every particle. It is the key feature of the initializers and is
        /// used to initialize the state of every particle. This method 
        /// is called within the emitter's createParticle met6hod for every particle 
        /// and need not be called by the user.
        /// </summary>
        /// <param name="emitter">The Emitter that created the particle.</param>
        /// <param name="particle">The particle to be initialized.</param>
        /// <remarks>This is an internal method that is called by the emitter.</remarks>
        public override void initialize(Emitter emitter, ref Particle particle)
        {
            for (int i = 0; i < _initializers.Count; ++i)
            {
                this._initializers[i].initialize(emitter, ref particle);
            }
        }
    }
}
